West Sussex · England
Sand Mastic in Hickstead
Professional sand mastic in and around Hickstead, with every bit of old sealant taken out first and a one-year guarantee.
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
- Gaps where the frame meets the masonry
What we do, step by step
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work begins. Most jobs take a few hours for a single window, longer for several. In a small place like Hickstead, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
Get a quote
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Related advice
Sand mastic for homes and businesses in Hickstead
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. We work on brick reveals, period & listed homes and tenement windows, and the jobs we see most are wind and rain getting in round a sash window and old sand mastic that has cracked, crumbled or fallen out.
Mastic can only go onto a dry, clean joint, so window work in Hickstead is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Your job is guaranteed for a year, as with all our work.
- Place
- Hickstead (RH17, BN6)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Other services in Hickstead
Frames and glazing around Hickstead
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Ockenden Manor (about 3.4 miles north-east) nearby, there’s older building stock in the area around Hickstead as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to The Parish Church of St Peter include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in. Letting a property close to Burgess Hill station? Then any sash windows need sound mastic to keep draughts and rain out.
Hickstead is about 3 miles west of Burgess Hill, in West Sussex. Across the RH17 area, our applicators can take on sand mastic. Our West Sussex coverage runs to 371 places, and Hickstead is one of them. We also work in Crawley, about 10 miles from Hickstead.
We cover every part of the RH17 and BN6 postcode area for sand mastic and the streets around it. We also cover the places around Hickstead: Goddards Green (1 mile east), Sayers Common (1 mile south), Abbotsford (2 miles east), Ansty (2 miles north-east) and Hurstpierpoint (2 miles south). Larger places within reach include Crawley (10 miles north), Horsham (9 miles north-west), Worthing (13 miles south-west), Haywards Heath (5 miles north-east), Burgess Hill (3 miles east) and East Grinstead (14 miles north-east).
Near you in Hickstead
Locally, jobs take us to homes and businesses close to St Paul's Catholic College. Hickstead’s nearest station is Burgess Hill station, roughly 3.1 miles east. Nearby you will also find The Dene Hospital (1.3 miles east) and Clayton Castle (4.6 miles south-east). Open spaces near Hickstead include Wolstonbury Hill and Bedelands Farm Nature Reserve.
When to call us in Hickstead
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
Common reasons people contact us are:
- Draughts and rain around sash boxes
- Tired mastic found when preparing windows for paint
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
Schools such as Twineham CofE Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before you book
- What happens if they find a problem under the old sealant
- How long the guarantee is
- Whether you can choose the colour
- What insurance they hold
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Check with your local planning authority if your home is listed
- Sort the mastic before the decorators arrive
- Go gently near the mastic when preparing windows
- Keep modern sealant off the mastic
Do not run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Questions from Hickstead
Do you cover Hickstead for sand mastic?
Yes, Hickstead is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Do you cover smaller places like Hickstead?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Is consent needed for window work on a listed home?
Check with your local planning authority. They decide whether consent is needed.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and finished to sit neatly against the masonry.
How we quote for sand mastic
You’ll get a clear quote before work begins. It’s based on:
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
- Which sealant suits the joint
- Any working-time requirements on site
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Helping us quote
What to tell us when you ask for a quote:
- If it’s domestic, commercial or a hotel
- Where the property is
- How we’d reach the joints
- What’s wrong with the joints now
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear quote before we start.
Why act early in Hickstead
If you are redecorating, renew the mastic first. Painting over failed mastic doesn’t seal it, and the new mastic is traditionally left unpainted. Around Hickstead, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
What you get with us
- Approved under the ARBOMaster scheme
- Trusted Arbo and Everbuild sealants
- Any old sealant cut out fully, not covered over
- Domestic, commercial and hotel work
Take a look at how sealant jobs are priced or what customers say.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Hickstead and across West Sussex. We can quote a run of properties together, and we are fully insured.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.